Universe

Question 1

1.

Answer 1

Universe is a singularity

Question 2

2.

Answer 2

Expands rapidly and is full of electromagnetic radiation in the form if high energy gamma photons.

Question 3

3.

Answer 3

First fundament particles are made.
Quarks and leptons

Question 4

4.

Answer 4

Quarks combine to form first hadron ( proton/ neutron)

Question 5

5.

Answer 5

Creation stops for 1 second

Question 6

6.

Answer 6

Photon and neutrons form deuterium and helium and tiny amounts of lithium and beryllium. 25% in the universe is helium nuclei

Question 7

7.

Answer 7

Universe cools down to form first atoms. Em radiation us converted into microwaves

Question 8

8.

Answer 8

First star appears. Heavier elements after Li start to form.

Question 9

9.

Answer 9

Galaxy, milky way forms as gravitational forces pulls clouds of hydrogen and existsing stars together

Question 10

10.

Answer 10

Solar system forms from nebula from left over supernova. After the sun formed remaining materials used for earth and other planets.

Question 11

11.

Answer 11

Humans appear!!

Question 12

How was dark energy founded?

Answer 12

A star had less light intensity then predicted and the only possible conclusion was the universe was expanding but an energy source is required first acceleration. But no source was found so dark energy was used.

Question 13

How did dark matter come about?

Answer 13

Studying the doppler effect the velocity if the stats in the galaxy dudnt behave as expected. It was expect that their velocity would decrease as the distance from centre of galaxy increases. But instead velocity was increasing.

Question 14

What did the observation suggest?

Answer 14

The mass of the galaxy isnt concentrated in the centre but most matter is in the centre. So dark matter is spread throughout the universe.

Question 15

Two key points for big bang theory?

Answer 15

Hubbles law and microwave background radiation

Question 16

How does Hubbles law back the big bang?

Answer 16

The universe is expanding so if you e go backward the universe of is kade from in single point.

Question 17

How did the existence of background radiation occur?

Answer 17

When the universe was young it had high energy gamma rays which eventually got stretched as the universe expanding and then became microwaves.

The universe is hot and dense and the temperature reduced and at this temperature the peak wavelength was a microwave.